You might find the following useful : Visual Understanding Environment - https://vue.tufts.edu/ Came across this in another thread recently - https://quarto.org/. - Source: Hacker News / 6 months ago

I use this for drawing "graphs" in the formal math sense like you're looking for: https://vue.tufts.edu/. Source: about 2 years ago

There are a number of free and commercial softwares developed for diagrams, flowcharts, and mind mapping with similar features. I haven't used them in a while, but in the past I've liked yEd and VUE. Both are free and support multiple platforms. Source: over 2 years ago

The site is working for me ( https://vue.tufts.edu ) as is the download, so it was probably a temporary glitch. Source: almost 3 years ago

I think your best bet may be Visual Understanding Environment (VUE). I can't say for sure if it will store or play videos but they make a big deal about "digital media" on their website. Source: almost 3 years ago

One day, I saw Side Projectors and submitted our website to get traffic. When I submitted it, there was an option like interested in selling and I chose that one as well. Source: over 1 year ago

I started an indie side project marketplace in 2014 called SideProjectors. https://sideprojectors.com Back then Flippa was probably the only dominant online marketplace for digital businesses. It’s a big claim I know but I’m proud that the marketplace still is thriving and since then there has been dozens of similar marketplaces popped up. Also in the past few years it’s been so much easier for anyone to start... - Source: Hacker News / over 1 year ago

Have you tried sideprojectors.com? I have sold a couple of sites there - zero fees, and lots of traffic - worth checking out. Source: about 2 years ago

I have sold a couple of projects on sideprojectors.com. Source: over 2 years ago